The microcapsules of fish oil were prepared through spray drying with octenyl succinic anhydride–linked starch (OSA-S) and maltodextrin (MD) as wall materials. The physical properties of microcapsules were evaluated, such as microstructure, hygroscopicity, dissolution, the average particle size, and rheological properties. It was found that the microcapsules were spherical with some wrinkle on the surface as observed by an optical microscope and a scanning electron microscope. Furthermore, the holes in the shell of microcapsules were fish oil droplets as shown in a laser confocal microscope, indicating that the fish oil microcapsules were a typically multinucleated system. In addition, there was no significant change in average particle size (0.2–0.9 μm) after 1-month storage at room temperature, and there was no chemical reaction between the wall materials and fish oil as was proven by infrared spectra. Finally, reconstituted emulsions (RCE) of microcapsule exhibited shear-thinning behavior at low shear rate, which was helpful to the processing, transportation, and storage of emulsion.

鱼油微胶囊是通过喷雾干燥制备的，其中辛烯基琥珀酸酐连接的淀粉（OSA-S）和麦芽糊精（MD）为壁材料。评价了微胶囊的物理性质，例如微结构，吸湿性，溶解度，平均粒径和流变性质。如通过光学显微镜和扫描电子显微镜观察到的，发现微胶囊是球形的并且在表面上具有一些皱纹。此外，如激光共聚焦显微镜所示，微胶囊壳中的孔是鱼油液滴，表明该鱼油微胶囊是典型的多核系统。此外，在室温下存放1个月后，平均粒径（0.2-0.9μm）没有显着变化，红外光谱证明，墙体材料与鱼油之间没有化学反应。最终，微胶囊的重构乳剂（RCE）在低剪切速率下表现出剪切稀化行为，这有助于乳剂的加工，运输和储存。